B Lebedev vs Viacheslav Osnos - URS-ch sf 1963.??.??
B Lebedev vs Viacheslav Osnos URS-ch sf Kharkov 1963.??.?? Sicilian Defense: Dragon Variation, Yugoslav Attack, Belezky Line 0-1 https://www.chessgames.com/perl/chessgame?gid=1381076
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B Lebedev vs Viacheslav Osnos - URS-ch sf 1963.??.??
B Lebedev vs Viacheslav Osnos URS-ch sf Kharkov 1963.??.?? Sicilian Defense: Dragon Variation, Yugoslav Attack, Belezky Line 0-1 https://www.chessgames.com/perl/chessgame?gid=1381076
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